MMP20 SONO-DIS (option D)
Page 16
Hauser
The first parameter to be configured is the raw density, which can be set in increments of +-0.005.
Ideally, the raw density is set correctly in the SONO-DIS before the measurement of the water
content.
Using the "+"
and "-"
keys, set the density value D of your fresh concrete, determined with a
concrete specimen, and press
"OK" to confirm your entry. This automatically takes you back
to the "CHANGE" menu.
Caution: It is important to enter the raw density value,
as it enters directly into the calculation of
the water content. If the raw density cannot be determined on site, it is also possible to enter the
target raw density in order to obtain acceptable measurement results. A density deviation of +-0.02
would mean an error of +-1.6 liters in the water content measurement. A difference of 0.1 in the
raw density, i.e. from the density value 2.200 to 2.300, means a difference of 8 liters in the water
content!
8.3.2
Setting the CHAR formulation characteristic
The CHAR parameter is entered by activating one of the six possible settings
fine C, medium B,
coarse A,
or
gap U.
The CHAR parameter is largely influenced by the mortar content in the
concrete. Select one of the four options for CHAR using the
and
keys, and press the "OK" key
to confirm your entry.
8.3.3
G-Set fine adjustment for
concrete variety with rock type and core water
The G-Set value is entered in liters/m
3
and can be entered in increments of 1 liter up to +- 50 liters.
Once a G-Set value is identified for a certain type of rock, it is advisable to archive this value. Set the
value for G-Set in increments of +-1 liter up to max. +- 50 liters/m
3
using the "+"
and "-"
keys,
and press the "OK" key
to confirm your entry.
Once you have changed or set the raw density, the CHAR parameter and the G-Set, you are taken
automatically to the following "Meas" menu when you press the "Next" key
.
8.3.4
Measuring in the "Average" operating mode
The following screen appears in the "Meas" menu once the raw density and G-Set have been entered.
SONO-DIS generally measures in the "average" mode and determines the kiln-dry water content of a
fresh concrete sample in l/m
3
using the raw density entered.
The Meas menu:
Remaining bat-
tery
Water content
as an
average value
Pressed briefly:
Delete last measurement
value
Pressed for longer:
Delete entire measure-
Number of measu-
rements performed
Conductivity
/ asses-
sment of the cement
Standard deviation
:
More single measurements
are needed if the std-dev >0.5!
Set new parameters
Last measured value
(can be deleted)
